CN108110080A - A kind of solar energy electrode structure and the solar cell using the electrode structure - Google Patents
A kind of solar energy electrode structure and the solar cell using the electrode structure Download PDFInfo
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- CN108110080A CN108110080A CN201810024430.5A CN201810024430A CN108110080A CN 108110080 A CN108110080 A CN 108110080A CN 201810024430 A CN201810024430 A CN 201810024430A CN 108110080 A CN108110080 A CN 108110080A
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- 239000004020 conductor Substances 0.000 claims abstract description 73
- 239000010408 film Substances 0.000 claims description 55
- 229910052751 metal Inorganic materials 0.000 claims description 30
- 239000002184 metal Substances 0.000 claims description 30
- 239000002313 adhesive film Substances 0.000 claims description 23
- 239000010409 thin film Substances 0.000 claims description 23
- 230000001681 protective effect Effects 0.000 claims description 18
- 239000011521 glass Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 9
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 4
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- 239000002390 adhesive tape Substances 0.000 claims description 3
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 229920001169 thermoplastic Polymers 0.000 claims description 3
- 239000004416 thermosoftening plastic Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000003466 welding Methods 0.000 abstract description 12
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052709 silver Inorganic materials 0.000 abstract description 10
- 239000004332 silver Substances 0.000 abstract description 10
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000007639 printing Methods 0.000 abstract description 4
- 238000005245 sintering Methods 0.000 abstract description 4
- 210000004027 cell Anatomy 0.000 description 88
- 239000010410 layer Substances 0.000 description 20
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 9
- 229910052710 silicon Inorganic materials 0.000 description 9
- 239000010703 silicon Substances 0.000 description 9
- 238000007731 hot pressing Methods 0.000 description 6
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- HVMJUDPAXRRVQO-UHFFFAOYSA-N copper indium Chemical compound [Cu].[In] HVMJUDPAXRRVQO-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005693 optoelectronics Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- KTSFMFGEAAANTF-UHFFFAOYSA-N [Cu].[Se].[Se].[In] Chemical compound [Cu].[Se].[Se].[In] KTSFMFGEAAANTF-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
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- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000003850 cellular structure Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- QNWMNMIVDYETIG-UHFFFAOYSA-N gallium(ii) selenide Chemical compound [Se]=[Ga] QNWMNMIVDYETIG-UHFFFAOYSA-N 0.000 description 1
- 238000000608 laser ablation Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Abstract
A kind of solar cell the invention discloses solar energy electrode structure and using the electrode structure, the solar cell includes electrode and battery, the electrode includes film and metallic conductor, the film is covered in metallic conductor both sides, the positive terminal metallic conductor of the electrode is covered on solar cell light-receiving surface electrode, negative pole end metallic conductor is covered on solar cell shady face electrode, and element cell is formed cascaded structure or parallel-connection structure according to actual needs.The present invention improves cell photoelectric conversion ratio, applied widely.The present invention avoids making rectangle grid line using printing and sintering process and main grid line electrode is covered in battery surface, the photoelectric conversion efficiency that lightproof area improves solar cell is reduced in the use for reducing a large amount of silver pastes, reduce damage of the stress of welding and metallic conductor to solar cell, add product reliability, and reduce and prepare grid line structure using silver paste, reduce production cost.
Description
Technical field
The present invention relates to area of solar cell, are related to a kind of solar energy electrode structure and the sun using the electrode structure
It can battery.
Background technology
Solar energy is as the clean energy resource for substituting traditional fossil energy, in recent years in surface power station, distributed power generation field
Fast development is obtained, civil solar product equally shows huge potentiality and space.Conventional solar cell component, the people
With the electrode structure of the especially needed various words of solar product to meet the requirement on electric performance under different applicable situations.
The electrode structure form of solar photovoltaic assembly mainly has two classes at present：Silica-base film, part copper indium gallium selenide cell
After component extensive deposition functional layer by laser ablation or machinery line and conductive electrode filling and etc. is formed series connection and parallel connection
Circuit structure, and crystal silicon solar batteries and part copper indium gallium selenium solar cell are then typical first production unit batteries
Afterwards, the photovoltaic module of series connection and parallel circuit structure is re-formed, such structure is needed first with the electrode structure of certain forms by before
Electrode and back electrode electric current draw to form element cell, then to form solar energy after certain paving mode serial or parallel connection
Lie prostrate component.
Elder generation's production unit battery at present, in the photovoltaic module technical solution for re-forming series connection and parallel circuit structure, unit
The electrode of the light-receiving surface of battery makes rectangle grid line usually using printing and sintering process and main grid line electrode is covered in battery table
Face mode is formed, then welding is welded in main gate line and exports electric current；The shady face electrode of the element cells such as crystal silicon usually by
Aluminium paste layer and grid line composition, then welded by welding and export electric current, and part copper indium gallium selenide element cell is using stainless steel as lining
Bottom material is not required to additional grid line, but the drainage conducting wire for still needing to welding or other forms draws electric current.
The traditional rectangle grid line of crystal silicon element cell and the preceding electrode structure of main gate line while a large amount of silver pastes are used,
Battery light-receiving surface forms the lightproof area of certain area.Not only silver paste usage amount causes greatly component of high cost, but also lightproof area
The photoelectric conversion efficiency of ambassador's solar cell reduces.In addition, conventional electrode structure connection in series-parallel is by being welded in main gate line
Connect the mode of welding, welding process add silicon chip crush with the hidden risk split, reduce the service life and reliability of component.
The content of the invention
The object of the present invention is to provide the electrodes and battery and component of a kind of solar cell, solve conventional solar cell
Battery light-receiving area, which is influenced, using a large amount of silver pastes causes silicon into main grid wire bonding welding during series and parallel structure with solar battery group
Piece crushes and hidden the problem of splitting.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of solar energy electrode, the solar energy electrode include metallic conductor, and the metallic conductor both side surface is pasted respectively
Anode thin film and negative film are covered with, forms the positive terminal and negative pole end of electrode, the anode end area is more than cathode end area,
The anode thin film and negative film project on metallic conductor to be pasted region and overlaps to form overlapping region, the overlapping region
Width is 1mm~20mm.The technical side of the photovoltaic module of serial or parallel connection circuit structure is formed in existing solar units battery
In case, printing need to be used and sintering process makes rectangle grid line and the positive electrode of main gate line is covered in battery surface, welding is welded
It is connected in main gate line and exports electric current, and rectangle grid line and the positive electrode of main gate line are needed using a large amount of silver pastes, in battery light
Face forms the lightproof area of certain area.And electrode structure of the present invention is simple, and solar cell light-receiving surface is attached to by hot pressing,
Remove welding process from, reduce silicon chip crush with the hidden risk split, add the service life and reliability of component.And positive terminal is long
Degree, which is more than negative pole end length, can ensure the conductive area of solar cell light-receiving surface, and anode thin film and negative film partly overlap shape
Into overlapping region can prevent electrode structure from contacting with battery edge generation short circuit, overlapping widths, which are less than 1mm, can not then prevent electricity
Pole structure contacts generation short circuit with battery edge, and overlapping widths, which are more than 20mm, then makes electrode contract with solar cell contact area
It is small, it is unfavorable for electrode and consolidates attaching on the solar cell.
Further, the anode thin film and negative film are respectively provided with two layers or multi-layer film structure, the anode thin film and
The basilar memebrane of negative film is adhesive film, and the adhesive film is covered on metallic conductor on one side, the adhesive film another side
Support protective film is covered with, the adhesive film and support protective film alternately paste to form two layers or multi-layer film structure successively.It is described
Adhesive film plays bonded metal electric conductor, and support protective film plays support protection and insulation, the optimum structure of film
For trilamellar membrane structure, order is pasted as adhesive film-support protective film-adhesive film.
Yet further, it is described bonding film thickness be 0.01mm~2mm, it is described support protection film thickness for 0.01mm~
5mm.Wherein adhesive film optimum thickness range is 0.02mm~0.05mm, support protective film optimum thickness range for 0.02mm~
0.08mm, cohesive force is weak if bonding film thickness is less than 0.01mm, and thickness, which is more than 2mm, influences transparency formation shading surface, branch
Support protection film thickness, which is less than 0.01mm, then can not effectively support guard electrode and effectively insulate, and thickness then influences transparent more than 5mm
Degree forms shading surface.
Yet further, the adhesive film is made of the binder resin material for having cementability after heating, the branch
Support protective film is made of thermoplastic polyester material.Adhesive linkage can be led to using the binder resin material for having cementability after heating
Overheat overlays subsidiary formula formula and adheres to metallic conductor on the solar cell, selects support protection made of thermoplastic polyester material
Film good insulating effect.
Yet further, the metallic conductor is made of flattening plain conductor.Flattening conducting wire improves Ohmic contact
Cell photoelectric transfer efficiency is improved, while reduces conductor structure position stress, thin film solar film layer is answered so as to reduce
Power is destroyed, and adds the reliability of product.
Yet further, the metallic conductor is arranged by multiple rectangular metal loops, and the rectangular metal is led
The length range of coil is 0.01mm~2mm, and the spacing between rectangular metal loop is 1mm~10mm, the thickness of plain conductor
It spends for 0.01mm~2mm.Rectangular metal loop length be less than 0.01mm then can not effectively connect solar cell light-receiving surface and
Shady face, length, which is more than 2mm, then causes shading-area excessive, reduces the optoelectronic transformation efficiency of solar cell；Rectangular metal conducting wire
1mm is smaller than easily because distance closely occurs very much that contact causes partial short-circuit to overheat between metallic conductor between circle, and spacing is big
Conductivity is then reduced in 10mm；The thickness of plain conductor is less than 0.01mm, and then electric current water conservancy diversion efficiency is low, and it is then right that thickness is more than 2mm
The stress increase of solar battery thin film layer, is easily destroyed film.
Yet further, the metallic conductor is made of a plurality of level metal line conductors arranged in parallel, the horizontal gold
Belong to conducting wire to connect to form serpentine metallic conductor between any two by plain conductor, the level gold of the serpentine metallic conductor
Category conductor length is 0.01mm~2mm, and the spacing between level metal line conductors is 1mm~10mm, and the thickness of plain conductor is
0.01mm~2mm.Level metal line conductors are connected by plain conductor and form electric current transmission circuit, level metal line conductors length is less than
0.01mm then can not effectively connect solar cell light-receiving surface and shady face, and length, which is more than 2mm, then causes shading-area excessive, drop
The optoelectronic transformation efficiency of low solar cell；1mm is smaller than easily because metal closely occurs very much in distance between level metal line conductors
Contact causes partial short-circuit to overheat between conductor, and spacing, which is more than 10mm, then reduces conductivity；The thickness of plain conductor is less than
Then electric current water conservancy diversion efficiency is low by 0.01mm, and thickness is more than 2mm and then the stress of solar battery thin film layer is increased, and is easily destroyed thin
Film.
Yet further, the solar cell includes multiple solar units batteries, and the solar units battery leads to
The electrode is crossed to connect to form cascaded structure or parallel-connection structure.The positive terminal of the electrode be covered in solar units battery by
In smooth surface, the negative pole end of the electrode is covered on adjacent solar units battery shady face, forms cascaded structure solar energy
Battery.The cascaded structure solar cell and the adjacent horizontal arranged in parallel of cascaded structure solar cell, the cascaded structure
Solar cell both ends are connected to form parallel-connection structure solar cell by convergent belt with adjacent cascaded structure solar cell.Electricity
The positive terminal and negative pole end of pole are attached on the light-receiving surface and shady face of solar units battery respectively by hot pressing, are installed and used
It is convenient, electrode of solar battery structural approach is prepared without tradition, the usage amount of silver paste is reduced, avoids in solar cell
Light-receiving surface forms lightproof area, reduces electricity conversion, and exports electric current without welding is welded in main gate line, reduces
Welding process silicon chip is caused it is hidden split and damaged hidden danger, and the solar units of the different number that can connect according to actual needs
Battery.
Yet further, the convergent belt of the parallel-connection structure solar cell upper end is covered in top solar units battery
On shady face, the Electrode Negative end is folded to solar units battery shady face, institute along top solar units battery edge
It states the negative film on Electrode Negative end to be covered on solar units battery shady face, under the parallel-connection structure solar cell
The convergent belt at end is directly covered on the solar units battery shady face of bottom.The remittance of parallel-connection structure solar cell upper and lower ends
Stream band makes to form parallel-connection structure between cascaded structure solar cell, and draws electric current is unified, simplify solar cell and
It is coupled structure.
Yet further, pasted on the cascaded structure solar cell light-receiving surface or parallel-connection structure solar cell light-receiving surface
Glass plate, the cascaded structure solar cell or parallel-connection structure solar cell surrounding package butyl adhesive tape are covered with by glass plate
It is fixed on cascaded structure solar cell light-receiving surface or parallel-connection structure solar cell light-receiving surface, the cascaded structure solar energy
Busbar, the busbar and solar units battery are covered on battery shady face or parallel-connection structure solar cell shady face
It is vertically arranged, insulation strip is covered on the busbar.The glass plate protection solar-electricity attached on solar cell light-receiving surface
Glass plate and solar energy surrounding are bundled together by pond light-receiving surface, butyl rubber belt, and glass plate is avoided to shift.Convergent belt is arranged on too
It is positive on battery shady face with Electrode Negative end in contact, the electric current of solar cell to be drained, the insulation strip pasted on busbar rises
Insulation and the effect of fixed protection busbar.
Compared with prior art, advantageous effects of the invention：
Firstth, cell photoelectric conversion ratio is improved, it is applied widely.The present invention is applicable not only to crystal silicon solar batteries unit, together
Sample is suitable for using flexible material as the thin-film solar cells unit of substrate, is applicable in different types of solar cell, is applicable in model
It encloses wide.Conventional solar cell production technology uses a large amount of silver pastes in the preceding electrode of element cell, and battery light-receiving surface is caused to be formed
The lightproof area of certain area reduces the photoelectric conversion efficiency of solar cell, and the present invention is avoided using printing and sintering process
It makes rectangle grid line and main grid line electrode is covered in battery surface, by changing electrode structure, electrode hot pressing is covered in the sun
The photoelectric conversion efficiency that lightproof area improves solar cell is reduced in energy battery surface, the use for reducing a large amount of silver pastes.
Secondth, assembled battery structure according to actual needs improves product reliability.Electrode of the present invention is attached to by hot pressing
On solar cell, need not weld just can form series, parallel structure, reduce welding process and silicon chip is caused hidden to split and break
The hidden danger of damage can adjust the solar cell quantity of connection according to different demands；Serpentine metallic conductor and rectangular metal are conductive
Even if there is the fracture of portion conductive structure in body structure, but still can achieve the effect that collected current；With traditional films too
Positive energy battery cell electrode structure is compared, and the Ohmic contact that flattening wire metals electric conductor can improve improves cell photoelectric conversion effect
Rate, while reduce conductor construction position stress, so as to reduce the stress rupture to thin film solar film layer, add product
Reliability.
3rd, production cost is reduced.Compared with the grid line structure of conventional crystalline silicon solar cell, used solar-electricity
It is extremely simple in structure, it is made of metallic conductor and film, material therefor is inexpensive easy acquisition material, batch production easy to implement,
A large amount of silver pastes need not be used to prepare main gate line to export for electric current, reduce production cost.
Description of the drawings
Fig. 1 is the electrode structure of solar cell of the present invention and is illustrated using the electrode structure of the solar cell of the electrode
Figure；
Fig. 2 is the metallic conductor structure diagram of electrode of solar battery structure of the present invention and the solar cell using the electrode
One；
Fig. 3 is the metallic conductor structure diagram of electrode of solar battery structure of the present invention and the solar cell using the electrode
Two；
Fig. 4 is the cascaded structure side view of electrode of solar battery structure of the present invention and the solar cell using the electrode；
Fig. 5 is the cascaded structure battery light-receiving surface of electrode of solar battery structure of the present invention and the solar cell using the electrode
Structure chart；
Fig. 6 is the cascaded structure battery shady face of electrode of solar battery structure of the present invention and the solar cell using the electrode
Structure chart；
Fig. 7 is the parallel-connection structure side view of electrode of solar battery structure of the present invention and the solar cell using the electrode；
Fig. 8 is the parallel-connection structure part analysis of electrode of solar battery structure of the present invention and the solar cell using the electrode
Figure；
Fig. 9 is the parallel-connection structure battery light-receiving surface of electrode of solar battery structure of the present invention and the solar cell using the electrode
Structure chart；
Figure 10 is the parallel-connection structure shady face knot of electrode of solar battery structure of the present invention and the solar cell using the electrode
Structure body.
Reference sign：1st, electrode；11st, metallic conductor；12nd, anode thin film；13rd, negative film；14th, overlay region
Domain；111st, adhesive film；112nd, protective film is supported；113rd, rectangular metal electric conductor；114th, serpentine metallic conductor；2nd, solar energy
Element cell；21st, solar units battery light-receiving surface；22nd, solar units battery shady face；3rd, cascaded structure solar-electricity
Pond；31st, cascaded structure solar cell light-receiving surface；32nd, cascaded structure solar cell shady face；4th, glass plate；5th, butyl rubber；
6th, busbar；7th, insulation strip；8th, parallel-connection structure solar cell；81st, parallel-connection structure solar cell light-receiving surface；82 and it is coupled
Structure solar cell shady face.
Specific embodiment
In order that those skilled in the art will better understand the technical solution of the present invention, with reference to embodiment and attached drawing
The present invention is described in further detail.
Embodiment 1
As shown in Figure 1, Figure 2, shown in Fig. 4, Fig. 5 and Fig. 6, a kind of electrode of solar battery structure and the solar-electricity using the electrode
Pond, 11 both sides of metallic conductor of the electrode are covered with anode thin film 12 and negative film 13, form the anode of electrode respectively
End and negative pole end, the positive terminal length are more than negative pole end length, and the anode thin film 12 pastes area with 13 part of negative film
14 width of overlapping region that domain overlaps to form is 5mm.Anode thin film 12 and negative film 13 are trilamellar membrane structure, membrane structure group
As adhesive film 111- support protective film 112- adhesive films 111, first layer bonding 111 direct hot pressing of film layer is covered in metallic conduction
On body 11, second layer support protective film 112 is covered on first layer adhesive film 111, and third layer adhesive film patch 111 overlays on the second layer
It supports on protective film 112, forms the positive and negative very thin films with insulation protection.The adhesive film 111 is set using jail bonding is visitd
Fat is made, thickness 0.6mm, and support protective film 112 is made of PET material, thickness 3mm.The metallic conductor 11 by
Flattening plain conductor is made, and the metallic conductor is made of multiple rectangular metal loops, the rectangular metal loop
Length for 0.1mm, the long wire spacing of rectangular metal loop is 5mm, and the thickness of plain conductor is 0.05mm.The electricity
The positive terminal of pole is covered on solar units battery light-receiving surface 21, and negative pole end is covered in adjacent solar units battery backlight
On face 22, cascaded structure solar cell 3 is in turn connected to form, is covered on the cascaded structure solar cell light-receiving surface 31
Glass plate 4 is fixed on cascaded structure solar cell by glass plate 4,3 surrounding of cascaded structure solar cell package butyl adhesive tape
On light-receiving surface, busbar 6, the busbar 6 and solar energy list are covered on the cascaded structure solar cell shady face 32
First battery 2 is vertically arranged, and 6 both ends of busbar are covered with insulation strip 7, and complete cascaded structure solar energy is formed so as to combine
Battery 3.
As shown in Fig. 1, Fig. 3, Fig. 7, Fig. 8, Fig. 9 and Figure 10, a kind of electrode of solar battery structure and using the electrode
Solar cell, 11 both sides of metallic conductor of the electrode are covered with anode thin film 12 and negative film 13, form electricity respectively
The positive terminal and negative pole end of pole, the positive terminal length are more than negative pole end length, the anode thin film 12 and negative film 13
It is 5mm point to paste 14 width of overlapping region that region overlaps to form.Anode thin film 12 and negative film 13 are two-layer film configuration,
Membrane structure composition supports protective film 112 for adhesive film 111-, and first layer bonding 111 direct hot pressing of film layer is covered in metallic conductor
On 11, second layer support protective film 112 is covered on first layer adhesive film 111, forms the positive and negative anodes with insulation protection
Film.The use of adhesive film 111 is visitd firm binder resin and is made, and thickness 1mm, support protective film 112 uses PET material system
Into thickness is 2 mm.The metallic conductor 11 is made of flattening plain conductor, and the metallic conductor 11 is by a plurality of parallel
The level metal line conductors of arrangement are formed, and the level metal line conductors connect to form serpentine metal by plain conductor between any two
Electric conductor 114, the serpentine metal leads the level metal line conductors length of a body 114 as 0.05mm, between level metal line conductors
Spacing is 7mm, and the thickness of plain conductor is 1mm.The positive terminal of the electrode is covered in solar units battery light-receiving surface 21
On, negative pole end is covered on adjacent solar units battery shady face 22, is in turn connected to form cascaded structure solar cell
3, the cascaded structure solar cell 3 and adjacent 3 horizontal arranged in parallel of cascaded structure solar cell, the cascaded structure is too
Positive energy battery both ends are connected to form parallel-connection structure solar cell 8 by convergent belt with adjacent cascaded structure solar cell.Institute
The convergent belt for stating 8 upper end of parallel-connection structure solar cell is covered on top solar units battery shady face 22, the electrode
Negative pole end is folded to along top solar units battery edge on solar units battery shady face 22, the parallel-connection structure sun
The convergent belt 6 of energy lower end is directly covered on bottom solar cell shady face 22, the top of the parallel-connection structure solar cell
It is connected between end reflux band 6 and lower end convergent belt 6 by convergent belt 6.The light-receiving surface of the parallel-connection structure solar cell 8
On be covered with glass plate 4, the glass plate surrounding package butyl rubber makes glass plate be fixed on parallel-connection structure solar cell, from
And it combines and forms complete parallel-connection structure solar cell 8.
Embodiments described above is only the excellent principle to the present invention and the illustrative embodiments that use, however this
Invention is not limited thereto.For those skilled in the art, spirit and substance of the present invention are not being departed from
In the case of, various changes and modifications can be made therein, these variations and modifications are also considered as protection scope of the present invention.
Claims (10)
1. a kind of solar energy electrode, the solar energy electrode includes metallic conductor（11）, it is characterised in that：The metallic conduction
Body（11）Both sides are covered with anode thin film respectively（12）And negative film（13）, the positive terminal and negative pole end of electrode are formed, it is described
Positive terminal length is more than negative pole end length, the anode thin film（12）With negative film（13）Part pastes region and overlaps to form weight
Folded region（14）, the overlapping region（14）Width is 1mm ~ 20mm.
2. a kind of solar energy electrode according to claim 1, it is characterised in that：The anode thin film（12）And negative film
（13）It is respectively provided with two layers or multi-layer film structure, the anode thin film（12）And negative film（13）Basilar memebrane be adhesive film
（111）, the adhesive film（111）Metallic conductor is covered on one side（11）On, the adhesive film（111）Another side is covered with branch
Support protective film（112）, the adhesive film（111）With support protective film（112）It alternately pastes to be formed two layers or multilayer film knot successively
Structure.
3. a kind of solar energy electrode according to claim 2, it is characterised in that：The adhesive film（111）Thickness is
0.01mm ~ 2mm, the support protective film（112）Thickness is 0.01mm ~ 5mm.
4. a kind of solar energy electrode according to Claims 2 or 3, it is characterised in that：The adhesive film（111）Using heating
The binder resin material with cementability is made afterwards, the support protective film（112）It is made of thermoplastic polyester material.
5. a kind of solar energy electrode according to claim 1, it is characterised in that：The metallic conductor（11）By flattening
Plain conductor is made.
6. a kind of solar energy electrode according to claim 5, it is characterised in that：The metallic conductor（11）By multiple squares
Shape plain conductor circle（113）Composition, the length range of the rectangular metal loop are 0.01mm~2mm, rectangular metal conducting wire
The long wire spacing scope of circle is 1mm~10mm, and the thickness range of plain conductor is 0.01mm~2mm.
7. a kind of solar energy electrode according to claim 6, it is characterised in that：The metallic conductor（11）By a plurality of flat
The level metal line conductors of row arrangement are formed, and the level metal line conductors connect to form serpentine gold between any two by plain conductor
Belong to electric conductor（114）, the serpentine metallic conductor（114）Level metal line conductors length range for 0.01mm~2mm, water
Spacing range between flat metal conducting wire is 1mm~10mm, and the thickness range of plain conductor is 0.01mm~2mm.
8. a kind of solar cell, it is characterised in that：The solar cell includes multiple solar units batteries（2）, it is described
Solar units battery（2）It connects to form cascaded structure or simultaneously by the electrode described in any one of claim 1 to 7 claim
It is coupled structure, the positive terminal of the electrode is covered on solar units battery light-receiving surface, and the negative pole end of the electrode is covered in phase
Adjacent solar units battery shady face（22）On, form cascaded structure solar cell（3）, the cascaded structure solar-electricity
Pond（3）With adjacent cascaded structure solar cell（3）Horizontal arranged in parallel, the cascaded structure solar cell（3）Both ends lead to
Cross convergent belt（6）With adjacent cascaded structure solar cell（3）Connection forms parallel-connection structure solar cell（8）.
9. a kind of solar cell according to claim 8, it is characterised in that：The parallel-connection structure solar cell（8）
The convergent belt of upper end（6）It is covered in top solar units battery shady face（22）On, the Electrode Negative end is along the top sun
Energy element cell edge is folded to solar units battery shady face（22）, the negative film on the Electrode Negative end（13）Patch
Overlay on solar units battery shady face（22）On, the convergent belt of the parallel-connection structure solar cell lower end（6）Directly paste
In bottom solar units battery shady face（22）On.
10. a kind of solar cell according to claim 9, it is characterised in that：The cascaded structure solar cell by
Smooth surface（31）Or parallel-connection structure solar cell light-receiving surface（81）On be covered with glass plate（4）, the cascaded structure solar-electricity
Pond（3）Or parallel-connection structure solar cell（8）Surrounding wraps up butyl adhesive tape（5）By glass plate（4）It is fixed on the cascaded structure sun
It can battery light-receiving surface（31）Or parallel-connection structure solar cell light-receiving surface（81）On, the cascaded structure solar cell shady face
（32）Or parallel-connection structure solar cell shady face（82）It is covered with busbar（6）, the busbar（6）With solar units electricity
Pond（2）It is vertically arranged, the busbar（6）On be covered with insulation strip（7）.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810024430.5A CN108110080A (en) | 2018-01-10 | 2018-01-10 | A kind of solar energy electrode structure and the solar cell using the electrode structure |
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| CN201810024430.5A CN108110080A (en) | 2018-01-10 | 2018-01-10 | A kind of solar energy electrode structure and the solar cell using the electrode structure |
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Family
ID=62219549
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